SENSORS
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2016
·Vol. 16
·期 3
·369
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IF 2.033
Liwei Liu,Zheng Zhou,He Tian,Jixue Li
Bismuth oxide (Bi2O3)-doped yttria-stabilized zirconia (YSZ) were prepared via the solid state reaction method. X-ray diffraction and electron diffraction spectroscopy results indicate that doping with 2 mol% Bi2O3and adding 10 mol% yttria result in a stable zirconia cubic phase. Adding Bi2O3as a dopant increases the density of zirconia to above 96%, while reducing its normal sintering temperature by approximately 250 °C. Moreover, electrical impedance analyses show that adding Bi2O3enhances the conductivity of zirconia, improving its capability as a solid electrolyte for intermediate or even lower temperatures.Keywords:solid electrolyte;ionic conductivity;YSZ;bismuth oxide
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
International Journal of Environmental Science and Technology
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2024
·
IF 3
Dou W.,Song Y.,Zhang Y.,Liu T.,Kong L.,Hu X.,Li D.
Removal of chloride (Cl(− I)) and fluoride (F(− I)) ions is a major issue in metallurgical waste acid recycling. This study explored the synchronous and two-step precipitation approaches using bismuth oxide (Bi 2 O 3 ) to remove Cl(− I) and F(− I). Under the mole ratio of Bi 2 O 3 and halide ions at respectively 0.3 and 0.7 for the first and second steps, residual concentrations of Cl(− I) and F(− I) below 100 and 50 mg/L, respectively, were obtained, where the removal proportions of Cl(− I) and F(− I) in the first and second steps were respectively 1:1.1 and 1:3.3. During the treatment, Bi 2 O 3 was dissolved to produce Bi 3+ , which reacted with Cl(− I) first and then F(− I), leading to the precipitation of bismuth oxychloride and bismuth oxyfluoride. After the removal of Cl(− I) and F(− I), residual Bi 3+ was removed to a final concentration of 1.3 mg/L through introduction of hydrogen sulfide (H 2 S) and recovered as bismuth sulfide (Bi 2 S 3 ). In this method, approximately 97.6% of Bi 2 O 3 was regenerated, additionally, Cl(− I) and F(− I) were transferred to a NaOH/NaCl/NaF concentrate with minimal volume. This two-step approach for the removal of Cl(− I) and F(− I) using Bi 2 O 3 exhibited excellent performance in terms of high efficiency, high reagent recovery rate and low secondary pollution risk.
研究领域:
环境科学
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冶金工程
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化学工程
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
·
IF 19.503
Shengnan Huang,Fan Tian,Jiawei Dai,Xuesong Tian,Guangfang Li,Yunling Liu,Zhiquan Chen,Rong Chen
Chlorophenols (CPs) treatment in water is a huge challenge due to its native robustness and harmful chlorinated by-products in degradation. In this work, we developed a specific BiO 2-x with high density Bi-O-Bi-O vacancy via a facile hydrothermal process. Extraordinary CPs removal ability under near infrared (NIR, >700 nm) is achieved over the as-prepared product. The presence of vacancies not only induced strong interactions between CPs and photocatalyst, but also promoted singlet oxygen ( 1 O 2 ) and photogenerated holes (h + ) generation. Furthermore, the generated 1 O 2 is found mainly originating from lattice oxygen release and the superoxide radicals ( O 2 − ) oxidation from BiO 2-x . Such performance could be well-maintained under wide pH range as well as in the presence of different constitutes in water matrix. This work unravels a unique function of BiO 2-x photocatalyst for CPs decomposition and provide a rational design of highly efficient photocatalysts toward optimization of pollutants degradations.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ChemCatChem
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2019
·Vol. 11
·期 7
·1884-1888
·
IF 4.495
Bing Chang,Qin Liu,Ninghua Chen,Yingchun Yang
Graphical Catalysis in bloom : A flower-like beta bismuth oxide shows an excellent NH 3 yield of 19.92 μg h −1 mg −1 cat. and Faradaic Efficiency of 4.3 % at −0.8 V with good selectivity in 0.1 M Na 2 SO 4 solution.A flower-like bismuth oxide as an efficient, durable and selective electrocatalyst for artificial N2 fixation in ambient condition from @Chengdu_China Ammonia is a basic industrial chemical, which is widely used in industry and agriculture. Traditional Haber–Bosch N 2 fixation process is not environmentally friendly, which not only excessively consumes energy, but releases enormous amount of greenhouse gas. Electrochemical N 2 reduction is an ideal alternative to N 2 fixation, but it requires effective electrocatalyst for N 2 reduction reaction (NRR). Herein, we develop a flower-like β-Bi 2 O 3 catalyst for artificial N 2 fixation with outstanding NRR performance and selectivity in ambient condition. This β-Bi 2 O 3 nanoflower shows an excellent NH 3 yield of 19.92 μg h −1 mg −1 cat. and Faradaic Efficiency of 4.3 % at −0.8 V in 0.1 M Na 2 SO 4 solution, better than most reported NRR electrocatalysts. This electrocatalyst also exhibits superb electrochemical stability and durability.
研究领域:
材料科学
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催化化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Minjun Zhou,Zhihao Guo,Mingwang Wang,Dewen Song,Rui Zhou,Hongbin Wang,Shuai Wang,Boshi Zheng,Xiaoshan Wang,Hui Ning,Mingbo Wu
Carbon dioxide electroreduction is a green technology for artificial carbon sequestration, which is being delayed from industrialization due to the lack of efficient catalysts at high current conditions. Herein, the Bi 2 O 3 nanoflakes were uniformly grown on a defective porous carbon (PC). This self-assembling Bi 2 O 3 /PC catalyst was applied to drive CO 2 electroreduction at 1.0 A, 1.5 A and 2.0 A while the Faradaic efficiency of formate reaches 91.50 %, 86.30 % and 84.22 %, respectively. Density functional theory calculations revealed the intrinsic defect of carbon is able to give electron to Bi through O bridge, which increased the electron aggregation of Bi and lowered the generation energy barrier of *OCHO intermediate. Additionally, the unique 3D network of staggered Bi 2 O 3 enhances the CO 2 adsorption and favors the electron transportation. By integrating all above advantages into a solid electrolyte-type cell, we are able to produce pure formic acid in a rate of 15.48 mmol h −1 at ampere current.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF RARE EARTHS
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2021
·
IF 3.712
Jin Tang,Zhili Chen,Xiaolong Yu,Walter Z. Tang
Novel black oxygen deficient bismuth oxide (Bi 2 O 3 -Bi 2 O 3 – x ) photocatalytic material was successfully prepared by a two zone temperature controlled muffle furnace method. The lanthanum , cerium and erbium ions are successfully doped into Bi 2 O 3 -Bi 2 O 3 – x with the average contents of 10.77 wt%, 7.62 wt% and 8.14 wt%, respectively. The results show that a large number of oxygen vacancies exist in Bi 2 O 3 -Bi 2 O 3 – x . La 3+ , Ce 3+ and Er 3+ act as electron acceptors to temporarily trap the photo-generated electrons. The XPS spectrum show Bi-O band in Bi 2 O 3 -Bi 2 O 3 – x and the O 1s peak of Ce/Bi 2 O 3 -Bi 2 O 3 – x move toward the direction of low binding energy. These phenomena fully prove that the separation of photogenerated electron-hole pairs will be more effectual, so as to reduce the possibility of charge carrier recombination. The radical scavenging experiments and electron spin resonance detections confirm that the conduction band of the original Bi 2 O 3 can easily receive photogenerated electrons, while the valence band of the modified Bi 2 O 3 -Bi 2 O 3 – x tends to accept photogenerated holes and then forms the circulation system. Therefore, Ce/Bi 2 O 3 -Bi 2 O 3 – x can degrade tetracycline hydrochloride up to 90.15%. This research provides some new insights into developing green and recyclable photocatalysts for the remediation of antibiotic contamination.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Yuefa Jia,Shiping Li,Haoxuan Ma,Jianzhi Gao,Gangqiang Zhu,Fuchun Zhang,Jun Young Park,Sangwon Cha,Jong-Seong Bae,Chunli Liu
To fully utilize the solar light, photocatalyst with broad spectrum response from UV to near-infrared (NIR) is desirable. In this work, ternary mixed valent Bi 2 O 4 -Bi 4 O 7 -BiO 2-x with rich oxygen vacancy has been synthesized through one-pot hydrothermal treatment of NaBiO 3 . The results showed that through adjusting the hydrothermal conditions, oxygen vacancy-rich Bi 2 O 4 -Bi 4 O 7 -BiO 2-x nanocomposites with much higher efficiency than single or mixed bismuth oxides (Bi 2 O 4 , Bi 4 O 7 , BiO 2-x and Bi 4 O 7 -BiO 2-x ,) can be synthesized for photocatalytic degradation of bisphenol A (BPA) under UV, visible, and NIR light irradiation. In addition, the liquid chromatography-mass spectrometer (LC–MS) characterization demonstrated that BPA was oxidized to 4-isopropenyphenol first and the rings were opened sequentially under NIR light irradiation. Further detection of reactive species indicated that holes, O 2 − , and OH were the main oxidizing species in the degradation system. The experimental observations and density functional theory (DFT) calculations suggested that both type-II and the Z-scheme charge transfer with oxygen vacancies as electrons and holes mediators were formed at the interfaces of Bi 2 O 4 , Bi 4 O 7 , and BiO 2-x , resulting in a very efficient separation of photogenerated charge carriers in the composite. This work adds to the growing potential of mixed valent bismuth oxides based photocatalysts and is expected to accelerate the pace of the development of new-generation photocatalysts with high efficiency utilizing full-spectrum solar light.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
Journal of Environmental Sciences
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2023
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IF 6.9
Man Yang,Zhenzhen Shi,Shaodong Sun,Bian Yang,Jie Cui,Jianing Li,Daqin Yun,Nian Lei
Developing heterojunction photocatalyst with well-matched interfaces and multiple charge transfer paths is vital to boost carrier separation efficiency for photocatalytic antibiotics removal, but still remains a great challenge. In present work, a new strategy of chloride anion intercalation in Bi 2 O 3 via one-pot hydrothermal process is proposed. The as-prepared Ta-BiOCl/Bi 24 O 31 Cl 10 (TBB) heterojunctions are featured with Ta-Bi 24 O 31 Cl 10 and Ta-BiOCl lined shoulder-by-shouleder via semi-coherent interfaces. In this TBB heterojunctions, the well-matched semi-coherent interfaces and shoulder-by-shoulder structures provide fast electron transfer and multiple transfer paths, respectively, leading to enhanced visible light response and improved photogenerated charge separation. Meanwhile, a type-II heterojunction for photocharge separation has been obtained, in which photogenerated electrons are drove from the CB (conduction band) of Ta-Bi 24 O 31 Cl 10 to the both of bilateral empty CB of Ta-BiOCl and gathered on the CB of Ta-BiOCl, while the photogenerated holes are left on the VB (valence band) of Ta-Bi 24 O 31 Cl 10 , effectively hindering the recombination of photogenerated electron-hole pairs. Furthermore, the separated electrons can effectively activate dissolved oxygen for the generation of reactive oxygen species (·O 2 − ). Such TBB heterojunctions exhibit remarkably superior photocatalytic degradation activity for tetracycline hydrochloride (TCH) solution to Bi 2 O 3 , Ta-BiOCl and Ta-Bi 24 O 31 Cl 10 . This work not only proposes a Ta-BiOCl/Bi 24 O 31 Cl 10 shoulder-by-shoulder micro-ribbon architectures with semi-coherent interfaces and successive type-II heterojunction for highly efficient photocatalytic activity, but offers a new insight into the design of highly efficient heterojunction through phase-structure synergistic transformation strategy.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Luwei Peng,Wenshuang Lou,Lulu Li,Yang Zhang,Xi Luo,Nengneng Xu,Jinli Qiao
CO 2 , as one of the greenhouse gases, actually represents a cheap and abundant C1 fuel to produce fuels and chemical stocks. Herein, inspired by photocatalysis and electrocatalysis, we have successfully synthesized a series of copper and bismuth oxides with heterostructure by a first co-electrodeposition method and then by thermal treatment at different temperatures. The bimetallic oxide (Cu 2 O/β-Bi 2 O 3 ) at 300 °C with the main exposure of β-Bi 2 O 3 (2 0 1) planes shows the beautiful micro-flower morphology with numerous petals in thickness around 20 ∼ 40 nm. Therefore, the Cu 2 O/β-Bi 2 O 3 heterostructure with active edge sites can electrochemically convert CO 2 into formate with a promising Faradaic efficiency (96.3 %) and current density (40.4 mA cm −2 ) at − 0.97 V vs. RHE. Specifically, the current density of Cu 2 O/β-Bi 2 O 3 bimetallic catalyst can be largely enhanced to 48.5 mA cm −2 at − 0.92 V vs. RHE with the assistance of light compared to the 30.1 mA cm −2 without light. The production rate of formate with the assistance of light can also be increased to 705.1 μmol h −1 cm −2 , superior to that of 536.4 μmol h −1 cm −2 without light. Such an excellent photo-assisted electrochemical CO 2 reduction performance is due to the fast charge-transfer process between Cu 2 O and β-Bi 2 O 3 . This study may provide a new route to directly synthesize the photoactive electrocatalysts with more edge sites and heterojunction for promoting electrochemical CO 2 reduction performance with the assistance of light field.
研究领域:
材料科学
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环境科学
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电化学
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Jing Gao,Qitao Liu,Haotian Wang,Muhammad Bilal Akbar,Zhihua Wu,Jiabo Le,Jianming Li,Qinglu Liu,Yongbo Kuang
CuBi 2 O 4 (CBO) photocathodes hold significant promise for efficient photoelectrochemical (PEC) water splitting due to their favorable band gap and theoretical onset potential. However, their practical application is hindered by poor charge separation efficiency. Herein, we introduce a characteristic in-situ solution Fe-doping strategy that markedly improves photoelectrochemical performance of CBO, doubling the photocurrent density and achieving an unprecedented 190 mV anodic shift in the onset potential. By integrating with an electrochemical oxidation post-treatment, a record incident photon-to-current efficiency (IPCE) exceeding 40% at 0.6 V vs. RHE under visible light illumination is achieved. The versatility of the doping strategy is demonstrated across CBO photocathodes synthesized by different methods with various morphologies, grain sizes, and crystallinities. Mechanistic studies reveal that the gradient distribution of Fe 3+ ions generates an internal electric field that facilitates efficient charge separation and increases acceptor density. The strong Fe–O bonding also enhances structural stability against photo-induced corrosion. Notably, our investigation uncovers the non-temperature-dependent nature of CBO photocurrent, indicating that PEC performance enhancement primarily depends on reducing carrier recombination rather than improving bulk conductivity. This work lays the groundwork for future advancements in water splitting performance of CBO photocathodes, offering a complementary strategy to conventional methods for enhancing charge separation efficiency.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
ChemistryOpen
·
2021
·Vol. 10
·期 4
·464-470
·
IF 2.911
Shi Li,Tao Guo,Miao Yao,Jiaxing Song,Wen Ding,Yiming Mao,Jialin Chen
Graphical The particle size of Bi 2 O 3 in thermite systems has an effect on the thermal excitation threshold and combustion performance. The increase of the particle size increases the thermal excitation threshold, reduces the amount of heat release, accelerates the combustion rate, and reduces the duration of combustion. The influence of Bi 2 O 3 particles size at the sub-micron scale on the thermal excitation threshold and combustion performance of nano-thermite systems was investigated. Three formulas were designed and prepared, Al(100 nm)/Bi 2 O 3 (170 nm), Al(100 nm)/Bi 2 O 3 (370 nm) and Al(100 nm)/Bi 2 O 3 (740 nm). The samples were characterized and tested by SEM, XRD, and DSC techniques. Electrical ignition and combustion experiments were performed. The results showed that with the increase of the particle size of Bi 2 O 3 , in the case of slow linear heating, the exothermic heat decreased (1051.2 J g −1 , 527.3 J g −1 and 243.6 J g −1 ) and the thermal excitation threshold temperature increased (564.52 °C, 658.1 °C and 810.9 °C). Simultaneously, the state of the thermite reaction correspondingly changed to solid-solid, liquid-solid and liquid-liquid thermite reaction. In the case of rapid heating , the increase in particle size increased the excitation current (0.561A, 0.710A and 0.837A). During the combustion process, the thermite system with the smallest Bi 2 O 3 particle size showed the largest combustion rate, and that with the largest particle size had the longest combustion duration.
研究领域:
材料科学
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燃烧与爆炸领域
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DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2021
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IF 4.464
Ruili Zhang,Tian Fang,Liping Ni,Yaping Zhu,Yuhua Shen,Anjian Xie,Li Lao
So far, the high theoretical specific capacity metal oxide is considered as a promising anode material for lithium-ion batteries (LIBs). Unfortunately, the intrinsic poor conductivity and structural stability of metal oxide, the huge volume expansion during the cycling cause serious capacity fading and unstable cycle. Here, the three-dimensional (3D) ordered inverse opal (IO) heterojunction structure of SnO 2 /Bi 2 O 3 on commercial nickel foam (NF) were fabricated. When used as a binder-free anode material for LIBs, the initial discharge specific capacity and charge specific capacity of the IOs electrode were 1229 mA h g −1 and 1098 mA h g −1 . The SnO 2 /Bi 2 O 3 /NF IOs exhibited excellent electrochemical activity and delivered a discharge capacity about 493 mA h g −1 after 500 cycles at the current density of 1000 mA g −1 , the Coulomb efficiency (CE) had been maintained at around 100%, which was much more than the control groups of SnO 2 /NF IOs (247 mA h g −1 ) and Bi 2 O 3 /NF IOs (124 mA h g −1 ). Furthermore, the prepared was successfully assembled with commercial LiFePO 4 to a full cell that displayed stable capacity about 101.2 mA h g −1 at the current density of 100 mA g −1 after 100 cycles. The excellent performance of SnO 2 /Bi 2 O 3 /NF IOs is due to that the 3D interconnected macroporous and mesoporous structures can shorten the transmission path of ions/electrons and buffer volume expansion. In addition, the heterojunction structure with obvious lattice defects can effectively promote the contact between electrode material and electrolyte. The strategy in this study lights on the illuminating design of 3D inverse opal heterostructure binder-free anode, and the obtained product has a great potential as the anode material applied in next-generation LIBs.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
危险品化学品经营许可证（带存储）